Poly(1,2‐diaminobenzene) and poly(1,3‐diaminobenzene): Synthesis, characterization, and properties

Abstract

Poly(1,2-diaminobenzene) (1,2-DAB) and poly(1,3-diaminobenzene) (1,3-DAB) have been synthesized by using ammonium persulfate as oxidizing agent in the presence and in the absence of the following metal ion salts: CuCl 2 , NiCl 2 , and CoCl 2 with different HCl concentrations. The products showed a different content of the metal ion depending on the HCl concentration. The polymers were characterized by Fourier transform infrared (FTIR), ultraviolet-visible (UV-Vis) spectroscopy, thermal analysis, and electrical conductivity. The polymerization yield depended on the presence of metal ions that can react as oxidizing reagents and/or catalysts. The polymerization mechanism depended on the position of the substituent. For poly(1,2-DAB) a ladder-type structure was obtained, and for poly(1,3-DAB) one similar to that of polyaniline. The thermal stability increased as the metal ion content in the polymer matrix increased. The electrical conductivity of the polymer did not depend on the metal ion content in the polymer.

Highly selective and stable microdisc biosensors for l-glutamate monitoring

“…Effect of PPD polymerization potential on the selectivity of Pt D /PPD-BSA The structure of PPD films and their mechanisms of formation are known to be complex, and have been studied in some detail by many authors [34][35][36][37][38][39][40][41][42]. The properties of PPD have been suggested to depend mainly on the conditions of the polymerization, such as pH, electrolyte composition, temperature and the applied potential.…”

Characterization of permselective coatings electrosynthesized on Pt–Ir from the three phenylenediamine isomers for biosensor applications

“…A four-monomer extended chain form was drawn and configured using the geometry optimization module and a 'ladder' configuration for PPD forms [53][54][55][56][57]. An end-to-end projection onto the surface was used to estimate the transverse cross-sectional area of a polymer strand (∼0.074 nm 2 ).…”

Comparison of simple aromatic amines for electrosynthesis of permselective polymers in biosensor fabrication

“…For PANI, a paralinked linear chain structure was used, 53 whereas the 'ladder' configuration of PoPD was chosen. [54][55][56] An end-to-end projection onto the surface was used to estimate the transverse crosssectional area of a polymer strand; this allowed the calculation of an upper limit of the number of polymer molecules that could be arranged standing in a 'brush-like' 57 manner on the ECQM electrode. This number, together with the mass of each monomer unit, its length ( ~0.5 nm) and Dm for the polymer, was used to estimate the thickness of PoPD and PANI on the electrode surface.…”